Anh Lâm Phong muốn làm cửa rào sắt có hình dạng và kích thước giống như hình vẽ kế bên, biết đường cong phía trên là một parabol. Giá cửa rào sắt có giá là 700.000 đồng. Vậy anh An phải trả bao nhiêu tiền để làm cài cửa rào sắt như vậy. (làm tròn đến hàng chục nghìn) ?

Chia sẻ

Một số câu hỏi khác có thể bạn quan tâm.

• Choose the best answer for the following sentence:

  When he returned home, he found the door ____________ .
  
  

• Choose the best answer for the following sentence:

  While her husband was in the army, Mary _____________ to him twice a week.
  
  

• Choose the best answer for the following sentence:

  I couldn’t cut the grass because the lawn mower ____________ a few days
  previously.
  
  

• Choose the best answer for the following sentence:

  According to this newspaper, John is said _______________ a new record for the 
  longjump.
   

• Choose the best answer for the following sentence:

  I have never played badminton before. This is the first time I __________ to play.
  
  

• Choose the best answer for the following sentence:

  Since _______________ , I have heard nothing from him.
   

• Choose the best answer for the following sentence:

  After I ________________ lunch, I looked for my bag.
  
  

• Choose the best answer for the following sentence:

  By the end of next year, George _____________ English for two years.
  
  

• Choose the best answer for the following sentence:

  The man got out of the car, ______________ round to the back and opened the boot.
   

• Choose the best answer for the following sentence:

  For several years, his ambition _______________ to a pilot.